ABSTRACT
The global energy crisis, fathomed by fossil fuel depletion and environmental issues, has shaped up the need for renewable energy sources and innovative energy storage devices. Tremendous efforts have been devoted to outpacing this aggressive consumption, reducing CO2 emissions, and introducing clean energy. Electrochemical energy storage and conversion constitute one of the most promising solutions, with research focused on designing electrode materials for batteries, supercapacitors, and fuel cells. Supercapacitors possess high power density and coulombic efficiency, along with long cycling life, demanding electrodes with increased porosity/surface area and stability. Covalent organic frameworks (COFs) can be ideal candidates for those applications by exploiting their modifiable skeletons and tunable porosity. Diverse topologies and highly ordered structures can be obtained by varying the building blocks geometry extending the lattice to two or three dimensions. This chapter emphasizes the recent development of pristine COF materials, in terms of design by utilizing feasible monomers, as well as composite COFs by implementing additional traits to alleviate inherent COF drawbacks.
